| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-50068: mm/damon/tests/sysfs-kunit.h: fix memory leak in damon_sysfs_test_add_targets() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| mm/damon/tests/sysfs-kunit.h: fix memory leak in damon_sysfs_test_add_targets() |
| |
| The sysfs_target->regions allocated in damon_sysfs_regions_alloc() is not |
| freed in damon_sysfs_test_add_targets(), which cause the following memory |
| leak, free it to fix it. |
| |
| unreferenced object 0xffffff80c2a8db80 (size 96): |
| comm "kunit_try_catch", pid 187, jiffies 4294894363 |
| hex dump (first 32 bytes): |
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| backtrace (crc 0): |
| [<0000000001e3714d>] kmemleak_alloc+0x34/0x40 |
| [<000000008e6835c1>] __kmalloc_cache_noprof+0x26c/0x2f4 |
| [<000000001286d9f8>] damon_sysfs_test_add_targets+0x1cc/0x738 |
| [<0000000032ef8f77>] kunit_try_run_case+0x13c/0x3ac |
| [<00000000f3edea23>] kunit_generic_run_threadfn_adapter+0x80/0xec |
| [<00000000adf936cf>] kthread+0x2e8/0x374 |
| [<0000000041bb1628>] ret_from_fork+0x10/0x20 |
| |
| The Linux kernel CVE team has assigned CVE-2024-50068 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.7 with commit b8ee5575f763c239902f8523d82103a45c153b29 and fixed in 6.11.5 with commit 05d43455f6bffa6abc7b937ca58be00452e6973f |
| Issue introduced in 6.7 with commit b8ee5575f763c239902f8523d82103a45c153b29 and fixed in 6.12 with commit 2d6a1c835685de3b0c8e8dc871f60f4ef92ab01a |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-50068 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| mm/damon/tests/sysfs-kunit.h |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/05d43455f6bffa6abc7b937ca58be00452e6973f |
| https://git.kernel.org/stable/c/2d6a1c835685de3b0c8e8dc871f60f4ef92ab01a |
